* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-bg: #f4f7fc;
            --primary-card: #FFFFFF;
            --dark-blue: #0A192F;
            --accent-gold: #D4AF37;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --border-color: #e2e8f0;
            --error-color: #ef4444;
            --font-display: 'Playfair Display', serif;
            --font-body: 'Montserrat', sans-serif;
            --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
            --transition-smooth: all 0.6s cubic-bezier(0.68, -0.55, 0.27, 1.55);
        }
        body {
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            background-image:
                radial-gradient(at 0% 0%, hsla(215, 60%, 95%, 1) 0px, transparent 50%),
                radial-gradient(at 100% 100%, hsla(43, 74%, 90%, 1) 0px, transparent 50%);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 2rem 1rem;
            perspective: 1500px;
        }
        .container {
            position: relative;
            width: 100%;
            max-width: 900px;
            min-height: 650px;
            background: var(--primary-card);
            border-radius: 24px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            animation: fadeIn 1s ease-out;
        }
        .form-container {
            position: absolute;
            top: 0;
            height: 100%;
            transition: var(--transition-smooth);
            border-radius: 24px;
        }
        .login-form-container {
            left: 0;
            width: 50%;
            z-index: 2;
        }
        .signup-info-container {
            left: 0;
            width: 50%;
            opacity: 0;
            z-index: 1;
        }
        .animation-container {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            opacity: 0;
            pointer-events: none;
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
            background: var(--primary-card);
            transition: opacity 0.5s ease-in-out;
        }
        .container.login-flow .login-form-container,
        .container.login-flow .overlay-container,
        .container.login-flow .signup-info-container {
            opacity: 0;
            pointer-events: none;
        }
        .container.login-flow .animation-container {
            opacity: 1;
            z-index: 5;
            pointer-events: auto;
        }
        form, .signup-info-content {
            background: var(--primary-card);
            display: flex;
            flex-direction: column;
            padding: 0 60px;
            height: 100%;
            justify-content: center;
            align-items: center;
            text-align: center;
            border-radius: 24px;
        }
        h2 {
            font-family: var(--font-display);
            color: var(--dark-blue);
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
        }
        .signup-info-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 2.5rem;
        }
        .input-group {
            position: relative;
            margin: 10px 0;
            width: 100%;
        }
        .input-field {
            width: 100%;
            padding: 16px 20px;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            font-size: 1rem;
            font-family: var(--font-body);
            background-color: var(--primary-bg);
            transition: all 0.3s ease;
        }
        .input-field:focus {
            outline: none;
            border-color: var(--accent-gold);
            box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
        }
        #togglePassword {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            cursor: pointer;
            transition: color 0.3s ease;
        }
        #togglePassword:hover {
            color: var(--dark-blue);
        }
        .error-message {
            color: var(--error-color);
            font-size: 0.9rem;
            font-weight: 500;
            width: 100%;
            min-height: 20px;
            margin-top: 10px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .error-message.visible {
            opacity: 1;
        }
        .btn {
            display: inline-block;
            background: var(--dark-blue);
            color: var(--primary-card);
            padding: 1rem;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            font-size: 1rem;
            cursor: pointer;
            border: none;
            box-shadow: 0 4px 15px rgba(10, 25, 47, 0.2);
        }
        .btn:hover {
            background: #1a2b47;
            transform: translateY(-4px);
            box-shadow: 0 8px 20px rgba(10, 25, 47, 0.25);
        }
        .btn:disabled {
            background-color: #64748b;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        .btn.full-width {
            width: 100%;
            margin-top: 20px;
        }
        .login-actions {
            display: flex;
            justify-content: flex-end;
            align-items: center;
            width: 100%;
            margin-top: 20px;
        }
        .login-actions .btn {
            width: 100%;
            padding: 1rem 2.5rem;
        }
        .form-header-logo {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }
        .form-header-logo .logo-svg { width: 50px; height: 50px; }
        .form-header-logo .logo-text-container { text-align: left; }
        .form-header-logo .logo-text { font-family: var(--font-display); font-size: 1.5rem; color: var(--dark-blue); }
        .form-header-logo .logo-subtitle { font-size: 0.8rem; font-weight: 400; color: var(--text-secondary); letter-spacing: 0.5px; }
        .overlay-container {
            position: absolute;
            top: 0;
            left: 50%;
            width: 50%;
            height: 100%;
            overflow: hidden;
            transition: var(--transition-smooth);
            z-index: 100;
        }
        .overlay {
            color: var(--primary-card);
            position: relative;
            left: -100%;
            height: 100%;
            width: 200%;
            transform: translateX(0);
            transition: var(--transition-smooth);
            background: var(--dark-blue);
            background-image: linear-gradient(135deg, #1e3a5f 0%, #0A192F 100%);
        }
        .overlay-panel {
            position: absolute;
            top: 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 0 40px;
            height: 100%;
            width: 50%;
            text-align: center;
            transform: translateX(0);
            transition: var(--transition-smooth);
        }
        .overlay-panel .form-header-logo .logo-text { color: var(--primary-card); }
        .overlay-panel .form-header-logo .logo-subtitle { color: #a0aec0; }
        .overlay-panel h1 { font-family: var(--font-display); font-weight: bold; margin: 0; font-size: 2.5rem; color: var(--primary-card); }
        .overlay-panel p { font-size: 1rem; font-weight: 300; line-height: 1.6; letter-spacing: 0.5px; margin: 20px 0 30px; max-width: 320px; }
        .ghost-btn { background: transparent; border: 2px solid var(--primary-card); box-shadow: none; }
        .ghost-btn:hover { background: rgba(255, 255, 255, 0.1); }
        .overlay-left { transform: translateX(-20%); }
        .overlay-right { right: 0; transform: translateX(0); }
        .container.signup-active .login-form-container { transform: translateX(100%); opacity: 0; }
        .container.signup-active .signup-info-container { transform: translateX(100%); opacity: 1; z-index: 5; animation: show 0.6s; }
        @keyframes show { 0%, 49.99% { opacity: 0; z-index: 1; } 50%, 100% { opacity: 1; z-index: 5; } }
        .container.signup-active .overlay-container { transform: translateX(-100%); }
        .container.signup-active .overlay { transform: translateX(50%); }
        .container.signup-active .overlay-left { transform: translateX(0); }
        .container.signup-active .overlay-right { transform: translateX(20%); }
        .mobile-switch { display: none; }
        
        .animation-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100%;
            padding: 40px;
            position: relative;
        }
        .rocket-stage {
            width: 200px;
            height: 300px;
            position: relative;
            display: grid;
            place-items: center;
        }
        .rocket-svg {
            width: 60px;
            position: absolute;
            bottom: 20px;
        }
        .rocket-svg g {
             transition: opacity 0.2s ease-out, transform 0.2s ease-out;
        }
        .status-text {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 20px;
            min-height: 44px;
        }
        .status-message { display: none; }
        .try-again-btn { display: none; margin-top: 20px; width: 50%; }

        .running .rocket-whole {
            animation: vibrate 0.5s cubic-bezier(.36,.07,.19,.97) infinite;
        }
        .running #flame {
            opacity: 1;
            transform-origin: 50% 100%;
            animation: pre-ignition 0.3s infinite alternate;
        }
        .running .status-verifying { display: block; }

        .success .rocket-whole {
            animation: launch 1s cubic-bezier(0.6, 0.04, 0.98, 0.335) 0.2s forwards;
        }
        .success #flame {
            opacity: 1;
            transform-origin: 50% 100%;
            animation: ignition 0.15s infinite alternate;
        }
        .success .status-success { display: block; color: var(--dark-blue); }

        .failure #flame { opacity: 0; }
        .failure .rocket-whole { opacity: 0; transition-delay: 0.3s; }
        .failure .blast-wave {
            opacity: 1;
            animation: blast 0.4s ease-out 0.2s forwards;
        }
        .failure .rocket-piece {
            opacity: 1;
        }
        .failure #piece-nose { animation: fall-piece-1 2s cubic-bezier(0.3, 0.1, 0.8, 1) 0.3s forwards; }
        .failure #piece-body { animation: fall-piece-2 2s cubic-bezier(0.3, 0.1, 0.8, 1) 0.35s forwards; }
        .failure #piece-fin-left { animation: fall-piece-3 1.8s cubic-bezier(0.3, 0.1, 0.8, 1) 0.4s forwards; }
        .failure #piece-fin-right { animation: fall-piece-4 1.8s cubic-bezier(0.3, 0.1, 0.8, 1) 0.42s forwards; }
        .failure #piece-window { animation: fall-piece-5 2.2s cubic-bezier(0.3, 0.1, 0.8, 1) 0.38s forwards; }
        .failure .status-failure { display: block; color: var(--error-color); }
        .failure .try-again-btn { display: block; }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: scale(0.95); }
            to { opacity: 1; transform: scale(1); }
        }
        @keyframes vibrate {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-1px); }
            75% { transform: translateX(1px); }
        }
        @keyframes pre-ignition {
            from { transform: scaleY(0.4); opacity: 0.6; }
            to { transform: scaleY(0.6); opacity: 1; }
        }
        @keyframes ignition {
            from { transform: scaleY(1); }
            to { transform: scaleY(1.3); }
        }
        @keyframes launch {
            from { transform: translateY(0); }
            to { transform: translateY(-400px); }
        }
        
        @keyframes blast {
            from { transform: scale(0); opacity: 1; }
            to { transform: scale(3); opacity: 0; }
        }
        @keyframes fall-piece-1 {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(-40px, 280px) rotate(-90deg); }
        }
        @keyframes fall-piece-2 {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(10px, 280px) rotate(45deg); }
        }
        @keyframes fall-piece-3 {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(-60px, 280px) rotate(-180deg); }
        }
        @keyframes fall-piece-4 {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(50px, 280px) rotate(160deg); }
        }
        @keyframes fall-piece-5 {
             0% { transform: translate(0, 0) rotate(0deg) scale(1); }
             100% { transform: translate(20px, 280px) rotate(360deg) scale(0.8); }
        }

        @media (max-width: 768px) {
            .container {
                max-width: 450px;
                min-height: 85vh;
                box-shadow: none;
                overflow: visible;
                background: transparent;
                transform-style: preserve-3d;
                transition: transform 0.8s cubic-bezier(0.68, -0.55, 0.27, 1.55);
            }
            .container.is-flipped {
                transform: rotateY(180deg);
            }
            .overlay-container {
                display: none;
            }
            .form-container, .animation-container {
                width: 100%;
                box-shadow: var(--shadow-lg);
                backface-visibility: hidden;
                left: 0;
            }
            .signup-info-container {
                opacity: 1;
                transform: rotateY(180deg);
            }
            .login-form-container {
                width: 100%;
            }
            form, .signup-info-content {
                padding: 0 30px;
            }
            h2 {
                font-size: 2rem;
            }
            .login-actions {
                 margin-top: 1.5rem;
            }
            .container.signup-active .login-form-container,
            .container.signup-active .signup-info-container {
                transform: none;
                opacity: 1;
                animation: none;
            }
            .mobile-switch {
                display: block;
                margin-top: 2rem;
                font-size: 0.9rem;
                font-weight: 500;
                color: var(--text-secondary);
                cursor: pointer;
            }
             .mobile-switch:hover {
                color: var(--dark-blue);
            }
        }